JPS6360159B2 - - Google Patents
Info
- Publication number
- JPS6360159B2 JPS6360159B2 JP55502428A JP50242880A JPS6360159B2 JP S6360159 B2 JPS6360159 B2 JP S6360159B2 JP 55502428 A JP55502428 A JP 55502428A JP 50242880 A JP50242880 A JP 50242880A JP S6360159 B2 JPS6360159 B2 JP S6360159B2
- Authority
- JP
- Japan
- Prior art keywords
- web
- cylinder
- drying
- drying zone
- vacuum box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000001035 drying Methods 0.000 description 103
- 230000032258 transport Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/04—Drying on cylinders on two or more drying cylinders
- D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
Landscapes
- Paper (AREA)
- Drying Of Solid Materials (AREA)
Description
請求の範囲
１ 乾燥処理部の一方のシリンダ１０が乾燥帯の
ループの外側で、他方のシリンダ１１が内側にそ
れぞれ位置し、ウエブが乾燥帯に支持されてウエ
ブ搬送方向上流側のシリンダ１０から他方のシリ
ンダ１１を経てウエブ搬送方向下流側のシリンダ
１０へ搬送され、ウエブの搬送路中にシリンダ１
０からシリンダ１１に亘るようにして真空ボツク
スが位置し、該真空ボツクスは吸引口を少なくと
もシリンダ１０とシリンダ１１との対応部分に備
え、前記真空ボツクスの吸引力が、シリンダ１１
と乾燥帯との間のくさび状の空間と、少なくとも
上流側シリンダ１０と真空ボツクスの前記上流側
シリンダ１０側先端部との間の空間とに作用して
ウエブを乾燥帯へ密着せしめるように構成してな
る紙製機の乾燥処理部のおけるウエブ誘導の装
置。Claim 1 One cylinder 10 of the drying processing section is located outside the loop of the drying zone, and the other cylinder 11 is located inside, and the web is supported by the drying zone and is moved from the cylinder 10 on the upstream side in the web conveyance direction to the other cylinder. The web is conveyed through the cylinder 11 to the cylinder 10 on the downstream side in the web conveyance direction, and the cylinder 1 is placed in the web conveyance path.
A vacuum box is located extending from cylinder 10 to cylinder 11, and the vacuum box is provided with a suction port at least at a portion corresponding to cylinder 10 and cylinder 11, and the suction force of the vacuum box is applied to cylinder 11.
and the drying zone, and at least the space between the upstream cylinder 10 and the tip of the upstream cylinder 10 of the vacuum box to bring the web into close contact with the drying zone. A device for guiding the web in the drying section of a paper making machine.
２ 前記真空ボツクスは、シリンダ１０，１１間
のウエブ搬送路に対面する平らな端壁３０が設け
られ、該端壁３０には、ウエブ搬送路に対応する
空間を囲むように閉止片が設けられており、前記
閉止片により乾燥帯が真空ボツクスの端壁３０か
ら距離Δ1分離れて進行するように案内されてい
る請求の範囲１による装置。2. The vacuum box is provided with a flat end wall 30 facing the web transport path between the cylinders 10 and 11, and a closing piece is provided on the end wall 30 so as to surround a space corresponding to the web transport path. 2. Apparatus according to claim 1, wherein said closure piece guides the drying zone at a distance .DELTA.1 from the end wall 30 of the vacuum box.
３ 前記シリンダ１１の表面に溝が設けられてお
り、前記溝を介して真空ボツクスからの吸引力が
くさび状の空間を通り、乾燥帯の外側に位置する
ウエブがシリンダ１１に巻付いた部分に作用する
構成の請求の範囲１または２による装置。3 A groove is provided on the surface of the cylinder 11, and the suction force from the vacuum box passes through the groove into a wedge-shaped space, and the web located outside the drying zone wraps around the cylinder 11. Device according to claim 1 or 2 in operative configuration.
４ シリンダ１１の表面に設けられる溝はシリン
ダ１１の表面の円周方向に設けられており、これ
らの溝は前記シリンダの表面にテープまたは細帯
片を巻付けて形成され、ウエブがシリンダ１１に
巻付いた部分の外側は減圧状態に保たれるか、ま
たはプレートでカバーされている請求の範囲３に
よる装置。4. The grooves provided on the surface of the cylinder 11 are provided in the circumferential direction of the surface of the cylinder 11, and these grooves are formed by wrapping tape or a strip on the surface of the cylinder, so that the web is attached to the cylinder 11. 4. Device according to claim 3, wherein the outside of the wound part is kept under reduced pressure or covered with a plate.
５ シリンダ１１または類似のロールの表面に軸
方向の溝または盲孔が設けられており、乾燥帯が
シリンダ１１に接触する部分の外側が大気圧に接
している請求の範囲４による装置。5. Device according to claim 4, in which the surface of the cylinder 11 or similar roll is provided with axial grooves or blind holes, the outside of which the drying zone contacts the cylinder 11 being in contact with atmospheric pressure.
６ 真空ボツクスの端面３１がシリンダ１１の表
面形状に対応して湾曲し、端面３１に閉止片２６
が同じく湾曲状態で取り付けられ、端面３１と乾
燥帯が接触するシリンダ１１の表面とが距離Δ2
を保つようになつている請求の範囲１乃至５のい
ずれかによる装置。6 The end surface 31 of the vacuum box is curved in accordance with the surface shape of the cylinder 11, and the end surface 31 is provided with a closing piece 26.
is also installed in a curved state, and the distance between the end face 31 and the surface of the cylinder 11 in contact with the drying zone is Δ 2
6. A device according to any one of claims 1 to 5, adapted to maintain.
７ 真空ボツクスには、可撓性の閉止片２４が乾
燥帯の外面に対し、横断方向に設けられ、乾燥帯
により誘導される空気が真空ボツクス内に入るの
を阻止される、請求の範囲１乃至６のいずれか一
つによる装置。7. The vacuum box is provided with a flexible closure piece 24 transversely to the outer surface of the drying zone to prevent air guided by the drying zone from entering the vacuum box. A device according to any one of 6 to 6.
８ 乾燥帯に対する閉止片が、ドクターブレード
状に設けられている請求の範囲１乃至７のいずれ
か一つによる装置。8. The device according to any one of claims 1 to 7, wherein the closure piece for the drying zone is provided in the shape of a doctor blade.
９ 真空ボツクスは、端壁３０と乾燥帯との間の
空間に連通する排出管が設けられている請求の範
囲１乃至８のいずれか一つによる装置。9. The device according to any one of claims 1 to 8, wherein the vacuum box is provided with a discharge pipe communicating with the space between the end wall 30 and the drying zone.
１０ 真空ボツクスは、乾燥帯の全幅を覆う幅寸
法を備えている請求の範囲１乃至９のいずれか一
つによる装置。10. The device according to any one of claims 1 to 9, wherein the vacuum box has a width dimension that covers the entire width of the drying zone.
１１ 真空ボツクスが乾燥帯に対し、その進行方
向に沿つて分割され、互いに隣接している請求の
範囲１乃至１０のいずれか一つの装置。11. The apparatus according to any one of claims 1 to 10, wherein the vacuum boxes are divided into sections along the traveling direction of the drying zone and are adjacent to each other.
１２ 分割された真空ボツクスによる吸引力は、
乾燥帯の進行入り口に近い真空ボツクスの方が強
い請求の範囲１１による装置。12 The suction power of the divided vacuum box is
The apparatus according to claim 11, wherein the vacuum box closer to the entrance of the dry zone is stronger.
明細書
この発明は、複数個の加熱シリンダの間をルー
プ状に進行する乾燥帯によりペーパーウエブを搬
送し、これを乾燥処理する製紙機の乾燥処理部の
装置に関するものである。Description The present invention relates to a device for a drying section of a paper making machine that transports a paper web through a drying zone that runs in a loop between a plurality of heating cylinders and then dries it.
従来技術としては、フインランド特許出願第
761953号、同第771056号、フインランド特許第
54954号、フインランド特許出願第780833号（出
願人、ジエイ・エム・ボンド，ゲーエムベーハ
ー，ドイツ特許出願DE―GM7708630号）などが
ある。 As a conventional technology, Finnish patent application no.
No. 761953, No. 771056, Finnish Patent No.
54954, Finnish Patent Application No. 780833 (Applicant: G.M. Bond, GmbH, German Patent Application DE-GM7708630).
前記のフインランド特許出願第761953号には、
ペーパーウエブを乾燥シリンダで乾燥するに際
し、乾燥シリンダを複数個、上下二段に配置し、
上段側の乾燥シリンダに掛けた乾燥帯を下段側の
乾燥帯に掛けわたし、この乾燥帯により乾燥すべ
きウエブを搬送して乾燥処理を行う工程が開示さ
れている。そして、この工程においては、ウエブ
を乾燥帯にそわせるため、ウエブの等幅の抑え帯
を使用しており、この抑え帯は粗い網状のもの
で、搬送時、前記三者にずれが生じないよう、前
記抑え帯の角速度を自動的に調節して、同じ角速
度で前記シリンダにそつて進行するようになつて
いる。 The aforementioned Finnish patent application no. 761953 includes:
When drying a paper web using a drying cylinder, multiple drying cylinders are arranged in two stages, one above the other.
A process is disclosed in which a drying belt hung over an upper drying cylinder is passed over a lower drying belt, and the web to be dried is transported by this drying belt to perform a drying process. In this process, in order to align the web with the drying zone, a restraining belt with the same width as the web is used, and this restraining belt is coarsely mesh-like, so that there is no misalignment between the three during conveyance. Thus, the angular velocity of the restraining band is automatically adjusted so that it moves along the cylinder at the same angular velocity.
前記フインランド特許出願第771056号には、製
紙機の乾燥処理部において、ウエブを乾燥するに
際し、複数個の乾燥シリンダにジグザグ状にかけ
わたした乾燥帯によりウエブを搬送し、搬送中、
乾燥帯とウエブとが離れないように、乾燥シリン
ダの表面に溝を設け、溝内の圧力がウエブ外側の
圧力よりも低くして、圧力差により乾燥帯とウエ
ブとを密着させている。 The Finnish Patent Application No. 771056 discloses that when drying a web in the drying processing section of a paper manufacturing machine, the web is transported by a drying belt spread over a plurality of drying cylinders in a zigzag pattern, and during transport,
In order to prevent the drying zone from separating from the web, a groove is provided on the surface of the drying cylinder, and the pressure inside the groove is lower than the pressure on the outside of the web, so that the drying zone and the web are brought into close contact due to the pressure difference.
前記フインランド特許第54954号においては、
プレス加工部から乾燥処理部へウエブを確実に移
送するため、乾燥シリンダ群とプレス加工部との
間に案内の乾燥シリンダを前記乾燥シリンダ群と
は別個に設け、ウエブを上下から搬送用の乾燥帯
で挟持し、前記案内の乾燥シリンダに対し調節自
由に接する案内ロールを設け、これら乾燥シリン
ダと案内ロールとの間に上下から乾燥帯で挟持さ
れたウエブを通し、プレス加工部から乾燥処理部
へと移送する工程が開示されている。 In the Finnish patent No. 54954,
In order to reliably transfer the web from the press processing section to the drying processing section, a guide drying cylinder is provided between the drying cylinder group and the press processing section separately from the drying cylinder group, and the drying cylinder for transporting the web from above and below is installed. A guide roll is provided which is held between belts and is in contact with the drying cylinder of the guide in a freely adjustable manner, and the web held between the drying belts is passed from above and below between these drying cylinders and the guide rolls, and the web is passed from the press processing section to the drying processing section. Disclosed is a process for transferring to.
前記ジエイ・エム・ボイト，ゲーエムベーハー
出願のフインランド特許出願第780833号には、乾
燥帯と乾燥シリンダとの間に生ずるくさび状の空
間入口部および／または出口部に乾燥シリンダの
全長にわたり、空気侵入防止装置を設け、これに
よつて前記くさび状空間へ空気が舞きこまれるの
を防止する技術が開示されている。 The Finnish Patent Application No. 780833 filed by G.M. Voigt, G.M. Beher discloses that the wedge-shaped space created between the drying zone and the drying cylinder is provided with air intrusion prevention over the entire length of the drying cylinder at the inlet and/or outlet. A technique is disclosed in which a device is provided to prevent air from being drawn into the wedge-shaped space.
前記した公知装置は、いずれもウエブが乾燥帯
から離れ、その結果、ウエブが破けてしまう現象
を防止することができない。 None of the above-mentioned known devices can prevent the phenomenon in which the web separates from the drying zone and, as a result, the web tears.
前記した公知装置においては、乾燥帯で搬送さ
れるウエブは、上下二段配列の乾燥シリンダの
内、下段側の乾燥シリンダを通るときは、ウエブ
が乾燥帯の外側に位置し、空気流や遠心力作用に
より、乾燥帯から離れる傾向にある。この分離現
象は、ウエブの速度が増せば、それに比例して顕
著となる。また、分離現象の原因は、回転する乾
燥シリンダと進行する乾燥帯とにより乾燥帯とウ
エブとの間に空気が誘導され、この空気流の流入
にもある。さらにまた、このように空気流が乾燥
帯とウエブとの間に流入すると、熱伝導率を低下
せしめる欠点が生ずる。現在一般に採用されてい
るウエブの速度においては、乾燥帯にフエルト帯
を用いることにより、前記欠点をある程度改める
ことができるが、処理速度を早めると、前記欠点
を解消することは不可能となる。 In the above-mentioned known apparatus, when the web conveyed in the drying zone passes through the lower drying cylinder of the two-tiered drying cylinder, the web is located outside the drying zone and is not affected by air flow or centrifugal flow. Due to the action of forces, it tends to move away from the dry zone. This separation phenomenon becomes proportionally more pronounced as the web speed increases. Further, the cause of the separation phenomenon is that air is introduced between the drying zone and the web by the rotating drying cylinder and the advancing drying zone, and the inflow of this air flow. Furthermore, this introduction of air flow between the drying zone and the web has the disadvantage of reducing thermal conductivity. At presently commonly employed web speeds, the aforementioned disadvantages can be alleviated to some extent by the use of a felt zone in the drying zone, but as processing speeds are increased, it is no longer possible to eliminate the aforementioned disadvantages.
前記欠点を解消し、この発明の目的を達成する
ためにこの発明の主たる要旨は、真空ボツクスか
らなる装置を一方の乾燥シリンダから他方の乾燥
シリンダへ進行する乾燥帯とウエブとに作用せし
め、特に乾燥帯と乾燥シリンダとの間に生ずるく
さび状空間に真空ボツクスの吸引力を作用せし
め、ウエブを乾燥帯へ密着せしめる点にある。 In order to overcome the above-mentioned drawbacks and to achieve the objects of the invention, the main gist of the invention is to provide a device consisting of a vacuum box to act on the drying zone and the web passing from one drying cylinder to the other, in particular The suction force of the vacuum box is applied to the wedge-shaped space created between the drying zone and the drying cylinder to bring the web into close contact with the drying zone.
この発明による装置においては、空気流のコン
トロールを真空減圧吸引力の使用を基にしてい
る。この発明による装置においては、真空ボツク
スが乾燥帯側の自由空間に対し作用するようにな
つており、空気流の方向を変えて有害な空気流を
減少させるバツフル作用を行う。さらにまた、こ
の発明の装置は、また乾燥帯とウエブとに吸引力
を作用せしめ、ウエブを乾燥帯側に吸引する。ま
た、この発明において、乾燥帯と乾燥シリンダと
の間の閉鎖空間に圧力差を生ぜしめ、乾燥帯を減
圧下に保つと共に、下側の乾燥シリンダにも圧力
差を作用させ、非通気性のウエブを圧力差により
乾燥帯側へ吸引する。したがつて、この発明によ
れば、装置は前記閉鎖空間の端部にのみ設ければ
十分である。また、この発明においては、乾燥シ
リンダの表面に溝を設けることにより、さらに効
果をあげることができ、下側の乾燥シリンダと乾
燥帯との間の空間には減圧力を作用せしめるかカ
バーを施すこともよい。 In the device according to the invention, control of the airflow is based on the use of vacuum suction. In the device according to the invention, the vacuum box is adapted to act on the free space on the side of the drying zone and has a buffing effect that redirects the airflow and reduces harmful airflow. Furthermore, the apparatus of the present invention also applies a suction force to the drying zone and the web, thereby sucking the web toward the drying zone. In addition, in this invention, a pressure difference is created in the closed space between the drying zone and the drying cylinder to maintain the drying zone under reduced pressure, and a pressure difference is also applied to the lower drying cylinder, so that the non-porous The web is sucked toward the drying zone by the pressure difference. According to the invention, it is therefore sufficient to provide the device only at the end of the closed space. Further, in this invention, the effect can be further improved by providing grooves on the surface of the drying cylinder, and reducing pressure is applied to the space between the lower drying cylinder and the drying zone or a cover is provided. It's also good.
この発明による装置はウエブの全幅にわたるこ
とが好ましいが、装置を二分割し、ウエブの搬送
を確実にすることもできる。そして、出口側にお
いては、ウエブの端部側にのみ吸引力を作用せし
めればよい。 Although the device according to the invention preferably spans the entire width of the web, it is also possible to divide the device into two parts to ensure web transport. Then, on the exit side, it is sufficient to apply suction force only to the end side of the web.
この発明による装置においては、最高の圧力差
が乾燥シリンダ部分にかゝり、最低の圧力差が自
由走行に対し作用するようにして乾燥帯が吸引作
用により彎曲するのを防ぎ、摩擦抵抗を減らし、
彎曲防止手段の設置を省いて、吸引エネルギーを
節減するようにしてある。 In the device according to the invention, the highest pressure difference is applied to the drying cylinder part, and the lowest pressure difference is applied to the free run, thereby preventing the drying zone from bending due to suction and reducing the frictional resistance. ,
The installation of anti-curvature means is omitted to save suction energy.
この発明による装置は少くとも下記の利点を有
する。即ち、構造が簡単で、ウエブの自由走行の
支持体を構成する。ウエブの搬送が楽に行える。
装置の撤去が簡単に行える。乾燥シリンダの周囲
に作用する吸引力により、ウエブからの水分の蒸
発が促進され、ウエブと乾燥シリンダとの間の熱
伝導効率も向上する。 The device according to the invention has at least the following advantages. That is, it has a simple structure and constitutes a support for the web to run freely. The web can be transported easily.
Equipment can be easily removed. The suction force acting around the drying cylinder accelerates the evaporation of moisture from the web and also improves the efficiency of heat transfer between the web and the drying cylinder.
この発明の実施例を図面に基き詳細に説明する
が、この発明は実施例に限定されるものではな
い。 Embodiments of the invention will be described in detail with reference to the drawings, but the invention is not limited to the embodiments.
第１図は、乾燥シリンダの間に設けられた真空
ボツクスからなる、この発明の装置の概略的側面
図である。 FIG. 1 is a schematic side view of the device of the invention, consisting of a vacuum box placed between drying cylinders.
第２図は、乾燥シリンダの間に配置された二個
の真空ボツクスからなる、この発明の装置を示す
説明図である。 FIG. 2 is an illustration of an apparatus according to the invention consisting of two vacuum boxes arranged between drying cylinders.
第３図は、乾燥帯とウエブとが進入する端部が
くさび状に形成されている、この発明の吸引ボツ
クスを示す説明図である。 FIG. 3 is an explanatory view showing the suction box of the present invention, in which the end into which the drying zone and web enter is formed into a wedge shape.
第４図は、第３図A1部の詳細図である。 FIG. 4 is a detailed view of part A of FIG. 3 .
第５図は、第３図A2部の詳細図である。 FIG. 5 is a detailed view of part 2 of FIG. 3A.
第６図は、第３，４，５図に示した装置の断面
図で、空気排除チヤンネルと乾燥フアブリツクに
対して作用するドクターブレード形の閉止ストリ
ツプを備えている。 FIG. 6 is a cross-sectional view of the apparatus shown in FIGS. 3, 4, and 5, with an air exclusion channel and a doctor blade-shaped closure strip acting on the drying fabric.
第７図と第８図は、それぞれ第６図の装置の要
部詳細図である。 7 and 8 are detailed views of the main parts of the apparatus shown in FIG. 6, respectively.
第９図は、この発明の装置の縦断正面図であ
る。 FIG. 9 is a longitudinal sectional front view of the device of the invention.
図面は、製紙装置の乾燥装置の一部を示すもの
で、多数のシリンダから構成される、この種の乾
燥装置においては、シリンダ１０，１１はスチー
ム、電気などの手段で加熱される。乾燥シリンダ
は、上下二段の配列で配置されるもので、上段側
のシリンダ１０と下段側のシリンダ１１とを乾燥
帯１２が通過するようになつている。乾燥帯１２
には、フエルトが使用されているが、他のものも
使用される。ウエブＷは乾燥帯１２に支持され、
各シリンダ間をジグザグに走行するが、上段側の
シリンダ１０においては、ウエブＷは、乾燥帯１
２とシリンダの加熱面との間に位置し、下段側の
シリンダにおいては、乾燥帯１２がシリンダ１１
の加熱面に接し、ウエブＷが外側に位置する。こ
のように、上段側のシリンダ１０は乾燥帯１２が
形成するループの外側にあり、下段側のシリンダ
１１は、ループの内側にある。 The drawing shows a part of a drying device of a paper manufacturing machine. In this type of drying device, which is composed of a large number of cylinders, the cylinders 10 and 11 are heated by means such as steam or electricity. The drying cylinders are arranged in two stages, upper and lower, and the drying zone 12 passes through the cylinders 10 on the upper stage and the cylinders 11 on the lower stage. dry zone 12
felt is used, but other materials are also used. The web W is supported by the drying zone 12,
The web W travels in a zigzag manner between the cylinders, but in the upper cylinder 10, the web W runs in the drying zone 1.
2 and the heating surface of the cylinder, and in the lower cylinder, the drying zone 12 is located between the cylinder 11 and the heating surface of the cylinder.
The web W is located on the outside in contact with the heating surface of the web. In this way, the upper cylinder 10 is located outside the loop formed by the drying zone 12, and the lower cylinder 11 is located inside the loop.
第１，２図に示すように、真空ボツクス１３，
１３′，１３″がシリンダ間に配置され、乾燥帯１
２の面に作用するようになつている。真空ボツク
スは乾燥帯１２のループ内に位置するもので、第
１図の真空ボツクス１３においては、側壁２０が
シリンダ１１に対面し、シリンダ１０，１０間に
は彎曲した側壁２１が位置し、側壁２１上を空気
が矢印Ａ方向へ流れるようになつている。真空ボ
ツクスには、吸引スロツトが設けられていて、シ
リンダ１０と乾燥帯１２との間のくさび状空間１
６，１７，１８，１９に吸引力が作用するように
なつている。 As shown in FIGS. 1 and 2, the vacuum box 13,
13', 13'' are arranged between the cylinders, and the drying zone 1
It is designed to act on two aspects. The vacuum box is located within the loop of the drying zone 12. In the vacuum box 13 in FIG. 1, a side wall 20 faces the cylinder 11, a curved side wall 21 is located between the cylinders 10, 21 so that air flows in the direction of arrow A. The vacuum box is provided with a suction slot and a wedge-shaped space 1 between the cylinder 10 and the drying zone 12.
The suction force is applied to 6, 17, 18, and 19.
第１図に示すように、シリンダ１０において
は、ウエブＷは乾燥帯１２とシリンダ１０の間に
あるが、シリンダ１１においては、ウエブＷは外
側に位置する。真空ボツクス１３は、圧力P1が
P1＜P2（１気圧）として設計されており、空間
１６，１７，１８で最高吸引力が得られるように
なつている。真空ボツクス１３の側壁２１によつ
て、空気流ＡがウエブＷを乾燥帯１２側へ押し付
け、高い吸引力によりウエブＷは空間１６で乾燥
帯１２と密接する。そして、低い吸引力によりウ
エブＷは中央位置W0に保持される。さらに、空
間１７においては、ウエブＷは、高い吸引により
乾燥帯１２側へ引かれ、乾燥帯１２へ吸引力が作
用し、ウエブＷの非通気性により吸引圧力は領域
α全体にわたり保持され、空間１８においては、
ウエブＷは乾燥帯１２へ引かれ、地点W1におい
ては、吸引力は弱まつて、ウエブＷを空間１９側
へと移送する作用を働く。 As shown in FIG. 1, in the cylinder 10, the web W is located between the drying zone 12 and the cylinder 10, but in the cylinder 11, the web W is located outside. The vacuum box 13 has a pressure P 1
It is designed such that P 1 <P 2 (1 atmosphere), and the maximum suction force is obtained in spaces 16, 17, and 18. Due to the side wall 21 of the vacuum box 13, the air flow A presses the web W towards the drying zone 12, and the high suction force brings the web W into close contact with the drying zone 12 in the space 16. The web W is held at the central position W 0 by the low suction force. Further, in the space 17, the web W is pulled toward the drying zone 12 by high suction, a suction force acts on the drying zone 12, and the suction pressure is maintained over the entire area α due to the non-air permeability of the web W. In 18,
The web W is drawn to the drying zone 12, and at a point W1 , the suction force weakens and acts to transport the web W toward the space 19 side.
シリンダ１１の表面は、溝付きか、また平滑面
であり、後者の場合は、乾燥帯１２は多孔質体で
あり、シリンダ１１が溝付き面である場合は、仮
想線１１′で示すような形状になつている。真空
ボツクス１３の吸引力P1は、ポンプ１５と吸引
路１４を介して発生する。 The surface of the cylinder 11 can be either grooved or smooth; in the latter case, the drying zone 12 is porous; if the cylinder 11 is a grooved surface, it can be as shown by phantom line 11'. It's taking shape. The suction force P 1 of the vacuum box 13 is generated via the pump 15 and the suction channel 14 .
第２図の実施例は、第１図のものと実質的に同
じであるが、真空ボツクス１３は二分割された真
空ボツクス１３′，１３″からなる点が相違してい
る。真空ボツクス１３′は、真空ボツクス１３″な
しでも使用できるが、シリンダ１１に溝が設けら
れていれば、領域βは穿孔されていることが好ま
しい。 The embodiment of FIG. 2 is substantially the same as that of FIG. 1, except that the vacuum box 13 consists of two vacuum boxes 13', 13''. can be used without the vacuum box 13'', but if the cylinder 11 is provided with a groove, it is preferable that the area β is perforated.
真空ボツクス１３，１３′，１３″は、ウエブＷ
全体または、ウエブＷの主体部分に対して吸引力
が作用できるように、できる限り広幅なものがよ
い。 The vacuum boxes 13, 13', 13'' are for the web W
It is preferably as wide as possible so that the suction force can act on the entire web W or the main part of the web W.
第３，４，５図は、真空ボツクスの一例を示
す。真空ボツクスは、吸入口２２，２３を有し、
シリンダ１０とウエブＷとの間のくさび状空間１
６から空気を引くと共に、シリンダ１１とウエブ
Ｗとのくさび状空間１７からも空気を引く。前記
吸入口２２，２３は、スライド蓋などの機構によ
り吸入能力が調節できるようになつており、その
口径、設置位置も変えられる。閉止片２４，２５
により、シリンダ１０，１１にそつて誘導される
空気流を遮断する。閉止片２４は、可撓性部材か
らなる。シリンダ１１にそつて、彎曲するカバー
片２６が設けられ、空気流がシリンダ軸方向へ流
れるのを阻止する、真空ボツクス１３の各端部に
設けられたカバー片２７も同様の目的のために設
けられている。閉止片２８，２９は、吸引力がシ
リンダ１０とシリンダ１１との間の乾燥帯１２の
中間部分へ拡散しないように設けられている。 Figures 3, 4 and 5 show an example of a vacuum box. The vacuum box has suction ports 22 and 23,
Wedge-shaped space 1 between cylinder 10 and web W
Air is drawn from the cylinder 11 and the wedge-shaped space 17 between the cylinder 11 and the web W. The suction capacity of the suction ports 22 and 23 can be adjusted by a mechanism such as a sliding lid, and the diameter and installation position thereof can also be changed. Closing pieces 24, 25
This blocks the air flow guided along the cylinders 10,11. The closing piece 24 is made of a flexible member. A curved cover piece 26 is provided along the cylinder 11, and a cover piece 27 provided at each end of the vacuum box 13 is provided for the same purpose to prevent the airflow from flowing in the cylinder axial direction. It is being The closing pieces 28 and 29 are provided to prevent the suction force from diffusing into the intermediate portion of the drying zone 12 between the cylinders 10 and 11.
真空ボツクス１３′は、そのストレートな端壁
３０が乾燥帯１２から距離△1を有して離れてお
り、彎曲した端壁３１がシリンダ１１の表面から
距離△2を有して離れており、これら端壁３０，
３１は、端壁３２と両側壁３３によつて連結され
ている。 The vacuum box 13' has a straight end wall 30 spaced apart from the drying zone 12 by a distance Δ 1 and a curved end wall 31 spaced apart from the surface of the cylinder 11 by a distance Δ 2 ; These end walls 30,
31 is connected by an end wall 32 and both side walls 33.
第６図は、真空ボツクスの他の例を示すもの
で、真空ボツクス１３の閉止片３４，３５はド
クターブレード状になつており、吸引口３６は閉
止片３４の直前にあつて、吸引空気流a1が最高と
なるようになつている。そして、乾燥帯１２にそ
つて誘導される、少量の空気流a3は、端壁３０と
乾燥帯１２の間を流れるが、その空気流a3の影響
は、排出管３７の設置によつて非常に少くなる。
即ち、空気流a3は排出管３７を通り排出されると
共に、空間１７の空気流は、排出口３８から真空
ボツクス内へ逆流し、外方へ排出される。 FIG. 6 shows another example of the vacuum box, in which the closing pieces 34 and 35 of the vacuum box 13 are in the shape of doctor blades, and the suction port 36 is located just in front of the closing piece 34, so that the suction air can flow. A 1 is now the highest. A small amount of airflow a3 guided along the drying zone 12 flows between the end wall 30 and the drying zone 12, but the influence of the airflow a3 is reduced by the installation of the discharge pipe 37. Very little.
That is, the air flow a3 is discharged through the discharge pipe 37, and the air flow in the space 17 flows back into the vacuum box through the discharge port 38 and is discharged to the outside.
第７図の実施例に示すように、排出管３７を設
けずに、閉止片３５の直前に排出口３９を設け、
空気流a′3を真空ボツクス１３の減圧状態下の
内部へ放出してもよい。また、乾燥帯の中間に低
吸引力を作用させる場合には、カバー４０を第７
図に示すような形状とすればよい。カバー４０の
端縁４１の形状は、乾燥帯１２の端縁の形状に合
わせればよく、そのカーブした形状は圧力差に起
因する。 As shown in the embodiment of FIG. 7, a discharge port 39 is provided immediately before the closing piece 35 without providing a discharge pipe 37,
The air stream a' 3 may be discharged into the interior of the vacuum box 13 under reduced pressure. In addition, when applying a low suction force to the middle of the dry zone, the cover 40 is
The shape may be as shown in the figure. The shape of the edge 41 of the cover 40 may match the shape of the edge of the drying zone 12, and its curved shape is due to the pressure difference.
第１図に示すように、下段側のシリンダ１１
は、溝付き表層部１１′を備えている。そして、
くさび状の空間１７，１８を介して空気が前記表
層部１１′の溝部分から吸引され、領域α全体に
吸引作用が及ぶ。これは、ペーパーウエブＷがそ
の水分含有量にもよるが、非通気性であるからで
ある。この結果、ウエブＷが遠心力作用などによ
り領域α部分において乾燥帯から離れる現象を防
止できる。溝付き表層部１１′の形成は、例えば、
テープをシリンダ表面に巻付けて行なわれる。ま
た、溝の代わりに、軸方向の溝または、盲孔も使
用できる。 As shown in FIG. 1, the lower cylinder 11
is provided with a grooved surface layer portion 11'. and,
Air is sucked from the groove portion of the surface layer 11' through the wedge-shaped spaces 17 and 18, and the suction effect extends to the entire area α. This is because the paper web W is non-breathable, depending on its moisture content. As a result, it is possible to prevent the web W from separating from the dry zone in the area α due to centrifugal force or the like. For example, the grooved surface layer 11' can be formed by
This is done by wrapping tape around the cylinder surface. Also, instead of grooves, axial grooves or blind holes can also be used.
この発明の各部構造は、下記の請求範囲に記載
の範囲で種々変えられる。 The structure of each part of this invention may be variously changed within the scope of the following claims.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI793643A FI59637C (en) | 1979-11-20 | 1979-11-20 | ANORDNING I TORKPARTIET AV EN PAPPERSMASKIN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56501732A JPS56501732A (en) | 1981-11-26 |
| JPS6360159B2 true JPS6360159B2 (en) | 1988-11-22 |
Family
ID=8513059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55502428A Expired JPS6360159B2 (en) | 1979-11-20 | 1980-10-27 |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4441263A (en) |
| EP (1) | EP0040208B1 (en) |
| JP (1) | JPS6360159B2 (en) |
| BR (1) | BR8008918A (en) |
| CA (1) | CA1171650A (en) |
| DE (1) | DE3069602D1 (en) |
| FI (1) | FI59637C (en) |
| IT (1) | IT1194723B (en) |
| NO (1) | NO152908C (en) |
| SU (1) | SU1152528A3 (en) |
| WO (1) | WO1981001428A1 (en) |
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| FI119029B (en) * | 2006-01-30 | 2008-06-30 | Metso Paper Inc | Method and apparatus in the drying section of a fiber web machine such as a paper or board machine |
| AT506407B1 (en) * | 2008-06-17 | 2009-09-15 | Andritz Ag Maschf | DEVICE AND METHOD FOR TRANSFERRING A MATERIAL TRACK |
| AT506408B1 (en) * | 2008-06-17 | 2009-09-15 | Andritz Ag Maschf | DEVICE AND METHOD FOR TRANSFERRING A MATERIAL TRACK |
| AT506409B1 (en) * | 2008-06-17 | 2009-09-15 | Andritz Ag Maschf | DEVICE AND METHOD FOR TRANSFERRING A MATERIAL TRACK |
| CN102797124A (en) * | 2011-05-25 | 2012-11-28 | 苏州龙英织染有限公司 | Cloth drying device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5094212A (en) * | 1973-12-22 | 1975-07-26 | ||
| JPS53134909A (en) * | 1977-04-04 | 1978-11-25 | Valmet Oy | Web conveying method within drying section of paper making machine and drying cylinder group |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3320677A (en) * | 1965-02-12 | 1967-05-23 | Rice Barton Corp | Web drying apparatus |
| US3555700A (en) * | 1967-08-15 | 1971-01-19 | Huyck Corp | Roll for papermaking machinery |
| US3733711A (en) * | 1971-09-07 | 1973-05-22 | Scapa Dryers Ltd | Apparatus for and method of treating a web |
| FI54163B (en) * | 1971-10-01 | 1978-06-30 | Matti Kankaanpaeae | FLERCYLINDERTORK FOER PAPPERSMASKIN |
| US3874997A (en) * | 1973-03-21 | 1975-04-01 | Valmet Oy | Multiple cylinder drier in a paper machine |
| US4186496A (en) * | 1977-03-15 | 1980-02-05 | Dominion Engineering Works Limited | Web drier section |
| DE2712184A1 (en) * | 1977-03-19 | 1978-09-21 | Voith Gmbh J M | DRYING SECTION FOR PAPER MACHINES |
| US4359828A (en) * | 1979-11-05 | 1982-11-23 | Weyerhaeuser Company | Vacuum box for use in high speed papermaking |
-
1979
- 1979-11-20 FI FI793643A patent/FI59637C/en not_active IP Right Cessation
-
1980
- 1980-10-27 EP EP80902041A patent/EP0040208B1/en not_active Expired
- 1980-10-27 DE DE8080902041T patent/DE3069602D1/en not_active Expired
- 1980-10-27 WO PCT/FI1980/000002 patent/WO1981001428A1/en active IP Right Grant
- 1980-10-27 US US06/276,334 patent/US4441263A/en not_active Expired - Lifetime
- 1980-10-27 JP JP55502428A patent/JPS6360159B2/ja not_active Expired
- 1980-10-27 BR BR8008918A patent/BR8008918A/en unknown
- 1980-11-19 CA CA000365025A patent/CA1171650A/en not_active Expired
- 1980-11-20 IT IT26143/80A patent/IT1194723B/en active
-
1981
- 1981-07-13 NO NO812400A patent/NO152908C/en unknown
- 1981-07-17 SU SU813311251A patent/SU1152528A3/en active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5094212A (en) * | 1973-12-22 | 1975-07-26 | ||
| JPS53134909A (en) * | 1977-04-04 | 1978-11-25 | Valmet Oy | Web conveying method within drying section of paper making machine and drying cylinder group |
Also Published As
| Publication number | Publication date |
|---|---|
| US4441263A (en) | 1984-04-10 |
| WO1981001428A1 (en) | 1981-05-28 |
| FI59637C (en) | 1981-09-10 |
| NO152908B (en) | 1985-09-02 |
| EP0040208B1 (en) | 1984-11-07 |
| JPS56501732A (en) | 1981-11-26 |
| BR8008918A (en) | 1981-09-01 |
| EP0040208A1 (en) | 1981-11-25 |
| NO812400L (en) | 1981-07-13 |
| IT8026143A0 (en) | 1980-11-20 |
| IT1194723B (en) | 1988-09-22 |
| FI59637B (en) | 1981-05-29 |
| CA1171650A (en) | 1984-07-31 |
| DE3069602D1 (en) | 1984-12-13 |
| SU1152528A3 (en) | 1985-04-23 |
| NO152908C (en) | 1985-12-11 |
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